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authorJędrzej Nowacki <jedrzej.nowacki@digia.com>2013-01-29 14:20:50 +0100
committerLars Knoll <lars.knoll@digia.com>2013-01-30 13:20:40 +0100
commit74fba4d8069c946c1ba12b9ac4d4026aaf14118b (patch)
tree138cc204ec33ef0c838c98355ea84846e11ca1a7 /src/3rdparty/masm/wtf/PageBlock.cpp
parent0781ecb087b027cccc1c44de1a1c7520cc89e2d2 (diff)
Say hello to QtV4 module.
Change-Id: I507cd5707b7d7223a0d901cf939896fb2649b684 Reviewed-by: Lars Knoll <lars.knoll@digia.com>
Diffstat (limited to 'src/3rdparty/masm/wtf/PageBlock.cpp')
-rw-r--r--src/3rdparty/masm/wtf/PageBlock.cpp78
1 files changed, 78 insertions, 0 deletions
diff --git a/src/3rdparty/masm/wtf/PageBlock.cpp b/src/3rdparty/masm/wtf/PageBlock.cpp
new file mode 100644
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--- /dev/null
+++ b/src/3rdparty/masm/wtf/PageBlock.cpp
@@ -0,0 +1,78 @@
+/*
+ * Copyright (C) 2010 Apple Inc. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
+ * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
+ * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
+ * THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include "config.h"
+#include "PageBlock.h"
+
+#if OS(UNIX)
+#include <unistd.h>
+#endif
+
+#if OS(WINDOWS)
+#include <malloc.h>
+#include <windows.h>
+#endif
+
+namespace WTF {
+
+static size_t s_pageSize;
+static size_t s_pageMask;
+
+#if OS(UNIX)
+
+inline size_t systemPageSize()
+{
+ return getpagesize();
+}
+
+#elif OS(WINDOWS)
+
+inline size_t systemPageSize()
+{
+ static size_t size = 0;
+ SYSTEM_INFO system_info;
+ GetSystemInfo(&system_info);
+ size = system_info.dwPageSize;
+ return size;
+}
+
+#endif
+
+size_t pageSize()
+{
+ if (!s_pageSize)
+ s_pageSize = systemPageSize();
+ ASSERT(isPowerOfTwo(s_pageSize));
+ return s_pageSize;
+}
+
+size_t pageMask()
+{
+ if (!s_pageMask)
+ s_pageMask = ~(pageSize() - 1);
+ return s_pageMask;
+}
+
+} // namespace WTF